nbsp; Published on the official website of the Federal Institute of Pedagogical Measurements (FIPI) demonstration versions of the OGE in chemistry (grade 9) for 2009 - 2019.
All options contain tasks of three types: tasks where you need to choose one of the proposed answers, tasks where you need to give a short answer, and tasks where you need to give a detailed answer. Correct answers are given for tasks of the first and second types, and for tasks of the third type the content of the correct answer and evaluation criteria for tasks with a detailed answer are given.
Presented two models. These models vary only ( tasks 22,23). To organize and conduct a real chemical experiment in model 2, the Federal Institute of Pedagogical Measurements has developed methodological materials
IN demo versions of the 2019 OGE in chemistry compared to 2018 demo options no changes.
Demonstration versions of the OGE in chemistry
Note that demonstration versions of the OGE in chemistry are presented in pdf format, and to view them you must have, for example, the free Adobe Reader software package installed on your computer.
| Demonstration version of the OGE in chemistry for 2009 |
| Demonstration version of the OGE in chemistry for 2010 |
| Demonstration version of the OGE in chemistry for 2011 |
| Demonstration version of the OGE in chemistry for 2012 |
| Demo version of the OGE in chemistry for 2013 |
| Demonstration version of the OGE in chemistry for 2014 (model 1) |
| Demonstration version of the OGE in chemistry for 2014 (model 2) |
| Demonstration version of the OGE in chemistry for 2015 (model 1) |
| Demonstration version of the OGE in chemistry for 2015 (model 2) |
| Demonstration version of the OGE in chemistry for 2016 (model 1) |
| Demonstration version of the OGE in chemistry for 2016 (model 2) |
| Demonstration version of the OGE in chemistry for 2017 (model 1) |
| Demonstration version of the OGE in chemistry for 2017 (model 2) |
| Demonstration version of the OGE in chemistry for 2018 (model 1) |
| Demonstration version of the OGE in chemistry for 2018 (model 2) |
| Demonstration version of the OGE in chemistry for 2019 (model 1) |
| Demonstration version of the OGE in chemistry for 2019 (model 2) |
Scale for recalculating the primary score for completing the examination work into a mark on a five-point scale
- a scale for recalculating the primary score for completing the 2018 examination paper into a mark on a five-point scale;
- a scale for recalculating the primary score for completing the 2017 examination paper into a mark on a five-point scale;
- scale for recalculating the primary score for completing the 2016 examination paper into a mark on a five-point scale.
- scale for recalculating the primary score for completing the 2015 examination paper into a mark on a five-point scale.
- scale for recalculating the primary score for completing the 2014 examination paper into a mark on a five-point scale.
- scale for recalculating the primary score for completing the 2013 examination paper into a mark on a five-point scale.
Changes in chemistry demos
In 2015 in demo versions of the OGE in chemistry was the structure of the options has been changed:
- The option began to consist two-piece.
- Numbering tasks became through throughout the entire version without letter designations A, B, C.
- The form for recording the answer in tasks with a choice of answers has been changed: the answer now needs to be written down number with the number of the correct answer(not circled).
Since 2014, demonstration versions of the OGE in chemistry presented two models. These models vary only in the practice-oriented tasks of the last part, Moreover, model 1 is similar to the work of previous years, and model 2 provides for the implementation real chemical experiment (tasks C3, C4 in the 2014 version and tasks 22,23 in the 2015-2016 versions). To organize and conduct a real chemical experiment in model 2, the Federal Institute of Pedagogical Measurements developed methodological materials. The choice of the exam model is carried out by the educational authorities of the constituent entities of the Russian Federation.
IN demo versions of the OGE 2016-2019 in chemistry compared to 2015 demo options there were no changes.
We are launching a special project for ninth-graders, where children who have gone through all the difficulties will tell their stories about passing the OGE and give advice on what to pay attention to when preparing.
Mikhail Sveshnikov: “We started preparing in November, solving problems, considering the structure of the exam. There was a lot of time until May, and I wasn’t too worried. Usually we completed one task in different tests (this really helps) and did tasks from the second part. We had about 15-20 solutions for the exam.
For me, the most difficult thing was determining the formula of a substance from the description and writing the reaction - the last task. I didn’t always solve it correctly during the test OGE tests. The day before, I tried to repeat everything as much as possible. On the day of the exam, I was not very worried, because it was the last and did not affect the certificate, but I didn’t want to write poorly.
When they gave me the CMM, I was confused because the option turned out to be very difficult, but I immediately started performing the tasks that I knew. It was not possible to solve that last task.
It seems to me that you should start preparing three to four months before the OGE (you won’t forget much), solve more tasks from the second part, because, as a rule, the first part is easier than in the manuals. And lastly, you should be confident in yourself.”
Ulyana Kis: “I prepared a lot for the exam. I studied every subject, did all my homework, went to electives, where we solved many tests and samples.
Of course, there were worries, because every teacher said that it would be very difficult, you need to prepare day and night, you should go to tutors. But I am independent, and I studied everything that was not clear at home, with the help of video tutorials and various sites.
And now that very day was approaching. We had a four-hour consultation, where our brains were in full swing, perhaps also because it was summer. We went through all the tasks ten times and were very worried.
On the day of the OGE, we went to take it to another school, we were all trembling with fear, we came, showed our passport, checked in, we were assigned to classrooms, assignments were opened in front of us and distributed and... Everything turned out to be so simple. Nobody expected this. We came across tasks that we studied in the first three electives. Everything was elementary, and there were curators with us who did not watch your every move, as happened in other exams.
The most important thing is to be calm and confident, not to listen to those who want to intimidate you.
I advise you to prepare yourself, without tutors, to whom you have to pay large sums.
For the exam, you can write a spur - a small piece of paper with the most important things, for example, formulas. If you decide to use it, you can go to the toilet, look and remember what you forgot.
For those who do not want to prepare or do not understand anything, the answers are posted on various websites and in groups on the day of the exam. To be on the safe side, you can take them with you.”
Artem Gurov: “I didn’t spend a lot of effort on preparation - an hour a week of extra chemistry classes, half of which I didn’t show up for. I started actively preparing at the last moment, two or three days before the exam. I can’t say that I was very worried, because there was an inexplicable inner confidence.
I started to feel some emotions an hour before the exam, and that’s when I began to understand what could happen if I didn’t pass it. The fear left me half an hour after the start of the exam, when some “euphoria” passed.
The only thing I can advise ninth graders is to prepare in advance. Unfortunately, you can’t do without this.”
Advanced level assignments include questions multiple choice, and tasks for establishing compliance positions presented in two columns, for example:
- 10.
Match the starting materials and reaction products.
| STARTING SUBSTANCES | REACTION PRODUCTS |
| A) H 2 S + O 2 => B) H 2 SO 3 + Na 2 O => B) H 2 SO 4 + NaOH => |
1) => SO 2 + H 2 O 2) => Na 2 SO 3 + H 2 O 3) => Na 2 SO 4 + H 2 4) => Na 2 SO 4 + H 2 O |
For each letter in the left column, you need to find a number in the right. The correct answer is written as a set of numbers (here 124 ). The numbers in the answer may be repeated!
Part II, high level
src="../new.jpg" width=22 height=21 border=0 Align=right title="New!">!}The degree of oxidation of chemical elements. Oxidizing agent and reducing agent. Redox reactions:
- 20.
Using the electronic balance method, arrange the coefficients in the reaction equation, the diagram of which
HI + H 2 SO 4 > I 2 + H 2 S + H 2 O
Identify the oxidizing agent and the reducing agent.
Based on the criteria given, this assignment will be worth three primary points.
Relationship between different classes of inorganic substances, ionic reaction equation (2020):
- 21.
The transformation scheme is given:
Fe(NO 3) 2 → Fe(OH) 2 → X →t→ Fe 2 O 3
Write molecular reaction equations that can be used to carry out these transformations. For the first transformation, write an abbreviated ionic equation for the reaction.
This assignment will be worth 4 primary points.
The task is to calculate the reaction equation for substances in solution. Mass fraction.
- 22.
170 g of silver nitrate solution was mixed with excess sodium chloride solution. A precipitate weighing 8.61 g formed. Calculate the mass fraction of salt in the silver nitrate solution.
Judging by the given criteria, this task will also be assessed with three primary points.
Part II, Practical part (2020)
- A solution of magnesium sulfate is given, as well as a set of the following reagents: zinc; hydrochloric acid; solutions of sodium hydroxide, barium chloride and potassium nitrate.
- 23.
Using only the reagents from the list above, write down the molecular equations of two reactions that characterize the chemical properties of magnesium sulfate and indicate the signs of their occurrence.
- 24.
Read the instructions for completing task 24. Prepare the laboratory equipment needed to conduct the experiment.
Carry out chemical reactions between magnesium sulfate and selected substances in accordance with the reaction equations compiled, observing the safety rules given in the instructions for the task. Describe the changes that occur with substances during the reactions performed.
Task 23 is worth 4 primary points, task 24 - 2 points.
In this section, I systematize the analysis of problems from the OGE in chemistry. Similar to the section, you will find detailed analyzes with instructions for solving typical problems in chemistry in the 9th grade OGE. Before analyzing each block of typical problems, I provide theoretical information, without which solving this task is impossible. There is only as much theory as is enough to know to successfully complete the task on the one hand. On the other hand, I tried to describe the theoretical material in an interesting and understandable language. I am sure that after completing the training using my materials, you will not only successfully pass the OGE in chemistry, but also fall in love with this subject.
General information about the exam
OGE in chemistry consists of three parts.
In the first part 15 tasks with one answer- this is the first level and the tasks in it are not difficult, provided, of course, you have basic knowledge of chemistry. These tasks do not require calculations, with the exception of task 15.
The second part consists of four questions- in the first two - 16 and 17, you need to choose two correct answers, and in 18 and 19, correlate the values or statements from the right column with the left.
The third part is problem solving. At 20 you need to equalize the reaction and determine the coefficients, and at 21 you need to solve the calculation problem.
Fourth part - practical, is not difficult, but you need to be careful and careful, as always when working with chemistry.
Total amount given for work 140 minutes.
Below are typical variants of tasks, accompanied by the theory necessary for the solution. All tasks are thematic - opposite each task a topic is indicated for general understanding.
Table 1
The maximum number of points that an examinee can receive for completing the entire OGE exam paper in chemistry (without a real experiment) is 34 points.
The exam results can be used when admitting students to specialized classes in secondary schools. The guideline for selection into specialized classes can be an indicator whose lower limit corresponds to 23 points.
Scale for converting the primary score for completing an examination paper into a mark on a five-point scale (working with a real experiment, demo version 2)
table 2
A guideline for selection into specialized classes can be an indicator whose lower limit corresponds to 25 points.
The maximum number of points that an examinee can receive for completing the entire examination paper (with a real experiment) is 38 points.
A system for assessing the completion of individual tasks and the OGE 2018 exam paper in chemistry as a whole.
Students' answers to tasks in Part 1 are checked by experts or using a computer. Correct completion of each of tasks 1–15 is scored 1 point. Correct completion of each of tasks 16–19 is assessed with a maximum of 2 points.
Tasks 16 and 17 are considered completed correctly if two answer options are correctly selected in each of them. For an incomplete answer - one of two answers is correctly named or three answers are named, of which two are correct - 1 point is given. The remaining answer options are considered incorrect and are scored 0 points.
Tasks 18 and 19 are considered completed correctly if three correspondences are correctly established. An answer in which two out of three matches are established is considered partially correct; it is worth 1 point. The remaining options are considered an incorrect answer and are scored 0 points.
The tasks of Part 2 (20–23) are checked by a subject commission. When assessing each of the three tasks, the expert, based on comparing the graduate’s answer with the sample answer given in the assessment criteria, identifies elements in the student’s answer, each of which is worth 1 point. Maximum score for a correctly completed task: for tasks 20 and 21 - 3 points each; in model 1 for task 22 – 5 points; in model 2 for task 22 - 4 points, for task 23 - 5 points.
Tasks with a detailed answer can be completed by students in different ways. Therefore, the sample solutions given in the evaluation criteria should be considered only as one of the possible answer options. This applies, first of all, to methods for solving calculation problems.